INCENDIARY DISPOSAL AREA
SITE DESCRIPTION
Based upon the recollection of a former installation employee, this site was located east of Yard D and Spring Creek and north of K Road. It was used for incendiary material burial during the mid- 1940s. It was believed to be small (approximately 40’ x 60’) and surrounded by barbed wire fence. The exact size, location, and material buried at this site cannot be determined because there are no records of this activity ever being performed at the IAAAP. Some indications do exist that magnesium may have been the material disposed of at this site. Previous samples taken during the SI may not have been appropriately located.
IAAP-013 will be expanded to include a cratered area found during a 2000 site walkover, located west of the Incendiary Disposal Area. These craters are approximately 4 ft wide and 2 ft deep and are spread over approximately 10 acres. A fence with "Danger" signs runs through the cratered area.
Additional soil and sediment samples were collected in 2004 by MKM and documented in the Draft Final Report for the Soil Data Collection. Elevated levels of Beryllium was detected above the background levels in multi-incremental shallow soil as determined in the OU1 Record of Decision as well as elevated levels of Lead detected in discrete shallow soil. The site was identified within the footprint of the East Training Area/Land Navigation Range which is considered an active range by MMRP. Further policy review is requred to determine program applicability.
This site was previously included in OU-4, but was transferred to OU-1 as documented in the Final ESD for Addition of Environmental Protectiveness to the Remedy and Transfer of Sites from OU-4 to OU-1 dated June 2008.
CLEANUP STRATEGY
This site is included in the PBC awarded in 2004.
The soil contaminated with explosives and/or metals at this site have been successfully completed by excavation, in accordance with the RAOs established in the final ROD to protect human health and the environment. Any contaminated soil under the infrastructures of IAAAP, and therefore inaccessible, was left in place. Once confirmation samples determined that all accessible contaminated soil had been removed, each excavation was backfilled with clean soil to the original grade, compacted, and then reclaimed to original conditions. All excavated soil was transported to Trench 6 in the IDA for later treatment. A total of 179 cy of contaminated soil was removed from the InDA in the Winter of 2006/2007.
This site is considered Response Complete (RC) as of September 2007 as documented in the Remedial Action Report for OU1 Soils Phase 5, 7, and 8 Sites and Installation Wide Ecological Evaluation.
A revised draft OU3 RI/FS was submitted to EPA for review in April 2008 to address groundwater; the recommendation for groundwater is No Further Action.
MEC and MC will be addressed under the MMRP.